44952001TH Rev.2
7-70
Oki Data CONFIDENTIAL
7. TROUBLESHOOTING PROCEDURES
(6-3) Jam occurs in the middle of paper running path.
Check item Checking method Action in case of NG
(6-3-1) Motor operation check
Paper feed motor
driver, belt motor
driver and ID motor
Confirm that the paper feed motor, belt
motor and ID motor work normally by
using the Motor & Clutch Test of the self-
diagnostic mode.
Check if any load exists or not.
Replace: the CU/PU
board; the feed motor,
the belt motor and the
image drum motor; or
the image drum unit
and the belt unit.
If any attempt of using
new ID unit or new belt
unit as a trial is going
to be made, be sure
to use the System
Maintenance Menu
FUSE KEEP MODE.
Paper feed motor,
belt motor
Pull out the CU/PU board BELT connector
③
, and check the following at the side of the
connector:
Several M
between Pin 1 and frame
ground
Several M between Pin 2 and frame
ground
Several M between Pin 3 and frame
ground
Several M between Pin 4 and frame
ground
Pull out the CU/PU board HOP connector
①
, and check the following at the side of the
connector:
Several M
between pin-1 – FG
Several M between pin-2 – FG
Several M between pin-3 – FG
Several M between pin-4 – FG
Replace the CU/PU
board
(6-4) Jam occurs immediately after paper has reached the fuser.
Check item Checking method Action in case of NG
(6-4-1) Motor operation check
Fuser motor Confirm that the fuser motor works normally
by using the Motor & Clutch Test of the self-
diagnostic mode.
Check if any load exists or not.
Replace the CU/PU
board.
Replace the fuser
motor.
Replace the fuser unit.
If any attempt of
using new fuser unit
as a trial is going to
be made, be sure
to use the System
Maintenance Menu
FUSE KEEP MODE.
(6-4-2) Temperature control of the roller rotation speed
Heat roller detected
temperature
Check the detected temperature of the heat
roller using the self-diagnostic mode. Is
abnormally high temperature or abnormally
temperaturedetected?
Replace the fuser unit
and the CU/PU board.
f any attempt of
using new fuser unit
as a trial is going to
be made, be sure
to use the System
Maintenance Menu
FUSE KEEP MODE.
(6-4-3) Check the installation condition of fuser unit
Fuser unit Check that the fuser unit is installed
normally.
(Is it pushed in down to the bottom-most
point?)
Install the fuser unit
correctly in a printer.
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General
Weight and Dimensions
